| /* |
| * (C) Copyright 2002 |
| * Stäubli Faverges - <www.staubli.com> |
| * Pierre AUBERT p.aubert@staubli.com |
| * |
| * See file CREDITS for list of people who contributed to this |
| * project. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| |
| #ifndef _DOS_H_ |
| #define _DOS_H_ |
| |
| /* Definitions for Dos diskettes */ |
| |
| /* General definitions */ |
| #define SZ_STD_SECTOR 512 /* Standard sector size */ |
| #define MDIR_SIZE 32 /* Direntry size */ |
| #define FAT_BITS 12 /* Diskette use 12 bits fat */ |
| |
| #define MAX_PATH 128 /* Max size of the MSDOS PATH */ |
| #define MAX_DIR_SECS 64 /* Taille max d'un repertoire (en */ |
| /* secteurs) */ |
| /* Misc. definitions */ |
| #define DELMARK '\xe5' |
| #define EXTENDED_BOOT (0x29) |
| #define MEDIA_STD (0xf0) |
| #define JUMP_0_1 (0xe9) |
| #define JUMP_0_2 (0xeb) |
| |
| /* Boot size is 256 bytes, but we need to read almost a sector, then |
| assume bootsize is 512 */ |
| #define BOOTSIZE 512 |
| |
| /* Fat definitions for 12 bits fat */ |
| #define FAT12_MAX_NB 4086 |
| #define FAT12_LAST 0x0ff6 |
| #define FAT12_END 0x0fff |
| |
| /* file attributes */ |
| #define ATTR_READONLY 0x01 |
| #define ATTR_HIDDEN 0x02 |
| #define ATTR_SYSTEM 0x04 |
| #define ATTR_VOLUME 0x08 |
| #define ATTR_DIRECTORY 0x10 |
| #define ATTR_ARCHIVE 0x20 |
| #define ATTR_VSE 0x0f |
| |
| /* Name format */ |
| #define EXTCASE 0x10 |
| #define BASECASE 0x8 |
| |
| /* Definition of the boot sector */ |
| #define BANNER_LG 8 |
| #define LABEL_LG 11 |
| |
| typedef struct bootsector |
| { |
| unsigned char jump [3]; /* 0 Jump to boot code */ |
| char banner [BANNER_LG]; /* 3 OEM name & version */ |
| unsigned short secsiz; /* 11 Bytes per sector hopefully 512 */ |
| unsigned char clsiz; /* 13 Cluster size in sectors */ |
| unsigned short nrsvsect; /* 14 Number of reserved (boot) sectors */ |
| unsigned char nfat; /* 16 Number of FAT tables hopefully 2 */ |
| unsigned short dirents; /* 17 Number of directory slots */ |
| unsigned short psect; /* 19 Total sectors on disk */ |
| unsigned char descr; /* 21 Media descriptor=first byte of FAT */ |
| unsigned short fatlen; /* 22 Sectors in FAT */ |
| unsigned short nsect; /* 24 Sectors/track */ |
| unsigned short nheads; /* 26 Heads */ |
| unsigned int nhs; /* 28 number of hidden sectors */ |
| unsigned int bigsect; /* 32 big total sectors */ |
| unsigned char physdrive; /* 36 physical drive ? */ |
| unsigned char reserved; /* 37 reserved */ |
| unsigned char dos4; /* 38 dos > 4.0 diskette */ |
| unsigned int serial; /* 39 serial number */ |
| char label [LABEL_LG]; /* 43 disk label */ |
| char fat_type [8]; /* 54 FAT type */ |
| unsigned char res_2m; /* 62 reserved by 2M */ |
| unsigned char CheckSum; /* 63 2M checksum (not used) */ |
| unsigned char fmt_2mf; /* 64 2MF format version */ |
| unsigned char wt; /* 65 1 if write track after format */ |
| unsigned char rate_0; /* 66 data transfer rate on track 0 */ |
| unsigned char rate_any; /* 67 data transfer rate on track<>0 */ |
| unsigned short BootP; /* 68 offset to boot program */ |
| unsigned short Infp0; /* 70 T1: information for track 0 */ |
| unsigned short InfpX; /* 72 T2: information for track<>0 */ |
| unsigned short InfTm; /* 74 T3: track sectors size table */ |
| unsigned short DateF; /* 76 Format date */ |
| unsigned short TimeF; /* 78 Format time */ |
| unsigned char junk [BOOTSIZE - 80]; /* 80 remaining data */ |
| } __attribute__ ((packed)) BootSector_t; |
| |
| /* Structure d'une entree de repertoire */ |
| typedef struct directory { |
| char name [8]; /* file name */ |
| char ext [3]; /* file extension */ |
| unsigned char attr; /* attribute byte */ |
| unsigned char Case; /* case of short filename */ |
| unsigned char reserved [9]; /* ?? */ |
| unsigned char time [2]; /* time stamp */ |
| unsigned char date [2]; /* date stamp */ |
| unsigned short start; /* starting cluster number */ |
| unsigned int size; /* size of the file */ |
| } __attribute__ ((packed)) Directory_t; |
| |
| |
| |
| #define MAX_VFAT_SUBENTRIES 20 |
| #define VSE_NAMELEN 13 |
| |
| #define VSE1SIZE 5 |
| #define VSE2SIZE 6 |
| #define VSE3SIZE 2 |
| |
| #define VBUFSIZE ((MAX_VFAT_SUBENTRIES * VSE_NAMELEN) + 1) |
| |
| #define MAX_VNAMELEN (255) |
| |
| #define VSE_PRESENT 0x01 |
| #define VSE_LAST 0x40 |
| #define VSE_MASK 0x1f |
| |
| /* Flag used by vfat_lookup */ |
| #define DO_OPEN 1 |
| #define ACCEPT_PLAIN 0x20 |
| #define ACCEPT_DIR 0x10 |
| #define ACCEPT_LABEL 0x08 |
| #define SINGLE 2 |
| #define MATCH_ANY 0x40 |
| |
| struct vfat_subentry { |
| unsigned char id; /* VSE_LAST pour la fin, VSE_MASK */ |
| /* pour un VSE */ |
| char text1 [VSE1SIZE * 2]; /* Caracteres encodes sur 16 bits */ |
| unsigned char attribute; /* 0x0f pour les VFAT */ |
| unsigned char hash1; /* toujours 0 */ |
| unsigned char sum; /* Checksum du nom court */ |
| char text2 [VSE2SIZE * 2]; /* Caracteres encodes sur 16 bits */ |
| unsigned char sector_l; /* 0 pour les VFAT */ |
| unsigned char sector_u; /* 0 pour les VFAT */ |
| char text3 [VSE3SIZE * 2]; /* Caracteres encodes sur 16 bits */ |
| } __attribute__ ((packed)) ; |
| |
| struct vfat_state { |
| char name [VBUFSIZE]; |
| int status; /* is now a bit map of 32 bits */ |
| int subentries; |
| unsigned char sum; /* no need to remember the sum for each */ |
| /* entry, it is the same anyways */ |
| } __attribute__ ((packed)) ; |
| |
| /* Conversion macros */ |
| #define DOS_YEAR(dir) (((dir)->date[1] >> 1) + 1980) |
| #define DOS_MONTH(dir) (((((dir)->date[1]&0x1) << 3) + ((dir)->date[0] >> 5))) |
| #define DOS_DAY(dir) ((dir)->date[0] & 0x1f) |
| #define DOS_HOUR(dir) ((dir)->time[1] >> 3) |
| #define DOS_MINUTE(dir) (((((dir)->time[1]&0x7) << 3) + ((dir)->time[0] >> 5))) |
| #define DOS_SEC(dir) (((dir)->time[0] & 0x1f) * 2) |
| |
| |
| #endif |
| |
